256451622662 has 4 divisors (see below), whose sum is σ = 384677433996. Its totient is φ = 128225811330.

The previous prime is 256451622643. The next prime is 256451622703. The reversal of 256451622662 is 266226154652.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64112905664 + ... + 64112905667.

It is an arithmetic number, because the mean of its divisors is an integer number (96169358499).

Almost surely, 2^256451622662 is an apocalyptic number.

256451622662 is a deficient number, since it is larger than the sum of its proper divisors (128225811334).

256451622662 is a wasteful number, since it uses less digits than its factorization.

256451622662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128225811333.

The product of its digits is 2073600, while the sum is 47.

The spelling of 256451622662 in words is "two hundred fifty-six billion, four hundred fifty-one million, six hundred twenty-two thousand, six hundred sixty-two".